I have a question that bothers me a long time. Why does sensei has a gun? He is a teacher and also has a gun in his pocket, but why?!

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He stepped back and threw his arms out.
"I'm always crazy around you Rose. Here, I'm going to write an impromptu poem for you."
He tipped his head back and shouted to the sky:
"Rose is in red
But never in blue
Sharp as a thorn
Fights like one too.” - Adrian; Shadow Kiss


http://www.mangareader.net/782-43930-9/heart-no-kuni-no-alice/ chapter-16.html

in real like or in a manga?


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A person can never change, they can only suppress ones' selfs intentions.

[CENTER][/CENTER]

In the manga called Mushi to Medama to Teddy Bear




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He stepped back and threw his arms out.
"I'm always crazy around you Rose. Here, I'm going to write an impromptu poem for you."
He tipped his head back and shouted to the sky:
"Rose is in red
But never in blue
Sharp as a thorn
Fights like one too.” - Adrian; Shadow Kiss


http://www.mangareader.net/782-43930-9/heart-no-kuni-no-alice/ chapter-16.html

The answer is quite obvious, because Guryuu is one of the successor of Sakaki Financial Group and his live as always being hunted. Another things is, after being told by Hebi (Serpent) that Rinne will be killed by Gurako, it is predicted that Guryuu will used all his influence and connections to get weapon such as Walter from his friend like the Lolicon Policemen and hired the bodyguard.

Implying teachers can't have guns.